Integrated gas control valve

Abstract

The utility model relates to the technical field of fuel gas control valves, in particular to an integrated fuel gas control valve which comprises a valve body, a flow control valve is arranged at one end of the valve body, and a switch valve body is arranged on the upper side of the other end of the valve body. When the pressure of the second-stage pressure reduction cavity on the diaphragm is smaller than that of the low-pressure spring below, the second-stage diaphragm rises, the lever acts, the valve port is opened at the moment, and gas in the first-stage pressure reduction cavity enters the second-stage pressure reduction cavity through the valve port, and when the pressure in the second-stage pressure reduction cavity rises and the pressure of the gas in the second-stage pressure reduction cavity on the second-stage diaphragm is larger than that of the low-pressure spring below the second-stage diaphragm, the valve port is opened. The diaphragm descends to drive the lever to act, the valve port is closed, and air inlet is stopped; the valve port is automatically opened and closed, so that the gas outlet has stable gas pressure; the flow control valve and the valve body are integrally formed in a die-casting mode, brass materials are replaced by die-casting aluminum, the structure is compact, and the production cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas control valve technical field, concretely is a kind of integrated gas control valve. BACKGROUND

[0002] Gas valve is a new type of safety supporting device of gas pipeline engineering. It is used for cutting off, connecting and adjusting the gas in pipeline, and has good control characteristics and sealing performance. It is suitable for city gas, liquefied petroleum gas, natural gas, oxygen and other gas medium pipelines.

[0003] The existing gas wind heating source adjusting device pressure regulator and proportional valve cannot supply gas normally in low-temperature environment, adopt split structure, and the flow control part uses brass material, so the comprehensive cost is high. Therefore, the utility model provides an integrated gas control valve to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an integrated gas control valve to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: an integrated gas control valve, comprising: a valve body, one end of the valve body is provided with a flow control valve, the upper side of the other end of the valve body is provided with a switch valve body, and the lower side is fixedly installed with a temperature and pressure sensor assembly;

[0006] One end of the flow control valve is fixedly installed with an outlet connector, and the upper end of the flow control valve is fixedly installed with two electromagnetic valves in a symmetrical manner.

[0007] A primary pressure reduction cavity is opened in the upper end of the valve body, and a secondary pressure reduction cavity is opened in the lower end of the valve body, a cover plate is fixedly installed on the upper end of the primary pressure reduction cavity through a primary diaphragm, a cover plate is fixedly installed on the lower end of the secondary pressure reduction cavity through a secondary diaphragm, and the upper end of the cover plate at the upper end is fixedly installed with a breather cap.

[0008] Preferably, one end of the valve body is fixedly installed with a fixed plate, and a plurality of fixing holes are opened in the upper and lower ends of the fixed plate.

[0009] Preferably, the inner end of one of the cover plates is fixedly installed with a high-pressure spring, the other end of the high-pressure spring is fixed on the outer end side wall of the primary diaphragm, the inner end of the other cover plate is fixedly installed with a low-pressure spring, and the other end of the low-pressure spring is on the outer end side wall of the secondary diaphragm.

[0010] Preferably, a lever part is installed in the primary pressure reduction cavity and the secondary pressure reduction cavity, and the other end of the two levers respectively abuts against the inner end side wall of the primary diaphragm and the secondary diaphragm.

[0011] Preferably, a plurality of air passages are arranged in the inner end of the flow control valve, and the outer end of the air passages is threadedly connected with a plug.

[0012] Preferably, the outlet joint and the air passage are in communication.

[0013] Preferably, the flow control valve and the valve body are integrally formed.

[0014] Preferably, the push rod assembly is installed in the on-off valve body.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model discloses a valve body, an outlet joint, a push rod assembly, a temperature pressure sensor assembly, a two-stage pressure reduction cavity, a two-stage diaphragm, a low-pressure spring, a valve body, an outlet joint, a plug, a solenoid valve, a one-stage pressure reduction cavity and a breather cap are arranged in sequence.

[0017] The flow control valve and the valve body are integrally pressure die cast, and the pressure die cast aluminum is used to replace brass material, so that the structure is compact, and the production cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the overall structure right view of the utility model;

[0019] Fig. 2 It is the overall structure left view of the utility model;

[0020] Fig. 3 It is the overall structure front view cross section schematic diagram of the utility model.

[0021] In the drawing: 1, cover plate;2, high-pressure spring;3, one-stage diaphragm;4, on-off valve body;5, push rod assembly;6, temperature pressure sensor assembly;7, two-stage pressure reduction cavity;8, two-stage diaphragm;9, low-pressure spring;10, valve body;11, outlet joint;12, plug;13, solenoid valve;14, one-stage pressure reduction cavity;15, breather cap;16, fixed plate;17, flow control valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the drawings to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only use to explain the embodiment of the utility model, and do not use to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without doing the premise of creative labor belong to the scope of protection of the utility model.

[0023] Please refer to Figs. 1 to 3 The utility model provides a technical scheme: a kind of integrated gas control valve, comprising: valve body 10, the one end of valve body 10 is provided with flow control valve 17, flow control valve 17 and valve body 10 are integrally pressure die forming, use pressure die aluminum to replace brass material, compact structure, low in production cost, the other end of valve body 10 upside is provided with switch valve body 4, switch valve body 4 is connected with the gas pipeline outside, push rod assembly 5 is installed in switch valve body 4, when long-term not gas, manually close valve, cut off gas source, improve safety, valve body 10 is provided with two-stage pressure reducing, so that outlet gas keeps stable appropriate working pressure, contain heater, heat gas source when necessary, temperature pressure sensor component 6 is fixedly installed in lower side, for detecting valve body internal pressure and temperature, signal is transmitted to the controller installed in the side of valve body 10, realize the automatic control of whether heating, the one end of valve body 10 is fixedly installed with fixed plate 16, the upper and lower ends of fixed plate 16 are all provided with a plurality of fixed holes, to facilitate the fixation of control valve.

[0024] The one end of flow control valve 17 is fixedly installed with outlet joint 11, outlet joint 11 is connected with the gas inlet pipe of gas equipment, and gas is delivered to gas equipment, the upper end of flow control valve 17 is fixedly installed with two solenoid valves 13.

[0025] The valve body 10 is provided with a first-stage pressure reduction cavity 14 at the upper end and a second-stage pressure reduction cavity 7 at the lower end. The upper end of the first-stage pressure reduction cavity 14 is fixedly provided with a cover plate 1 through a first-stage diaphragm 3. The lower end of the second-stage pressure reduction cavity 7 is fixedly provided with the cover plate 1 through a second-stage diaphragm 8. The inner end of the cover plate 1 at the upper end is fixedly provided with a high-pressure spring 2. The other end of the high-pressure spring 2 is fixed to the outer end side wall of the first-stage diaphragm 3. The inner end of the cover plate 1 at the lower end is fixedly provided with a low-pressure spring 9. The other end of the low-pressure spring 9 is on the outer end side wall of the second-stage diaphragm 8. The first-stage pressure reduction cavity 14 and the second-stage pressure reduction cavity 7 are both provided with lever portions. The other ends of the two levers are respectively abutted against the inner end side walls of the first-stage diaphragm 3 and the second-stage diaphragm 8. The first-stage diaphragm 3 moves by compressing the high-pressure spring 2. The second-stage diaphragm 8 moves by compressing the low-pressure spring 9. The inner end of the flow control valve 17 is provided with a plurality of air passages. The outer ends of the air passages are all threadedly connected with plugs 12. The outlet connector 11 is communicated with the air passages. When the gas consumption behind the outlet connector 11 increases, the outlet pressure decreases. The pressure of the diaphragm in the second-stage pressure reduction cavity 7 is less than the pressure of the low-pressure spring 9 below. The second-stage diaphragm 8 rises. The lever acts. At this time, the valve port is opened. The gas in the first-stage pressure reduction cavity 14 enters the second-stage pressure reduction cavity 7 through the valve port. When the pressure in the second-stage pressure reduction cavity 7 increases, the pressure of the gas in the second-stage pressure reduction cavity 7 against the second-stage diaphragm 8 is greater than the pressure of the low-pressure spring 9. The diaphragm descends. The lever acts to close the valve port and stop the gas inlet. The automatic opening and closing of the valve port make the outlet port have stable gas pressure. The temperature and pressure sensor assembly 6 is installed above the second-stage pressure reduction cavity 7. The gas in the cavity is communicated with the sensor for detecting the temperature and pressure of the internal gas.

[0026] The upper end of the cover plate 1 at the upper end is fixedly provided with an air vent cap 15. The air vent cap 15 is a waterproof air vent cap to prevent rainwater and the like from entering the interior of the valve body 10.

[0027] When the gas consumption behind the outlet connector 11 increases, the outlet pressure decreases. The pressure of the diaphragm in the second-stage pressure reduction cavity 7 is less than the pressure of the low-pressure spring 9 below. The second-stage diaphragm 8 rises. The lever acts. At this time, the valve port is opened. The gas in the first-stage pressure reduction cavity 14 enters the second-stage pressure reduction cavity 7 through the valve port. When the pressure in the second-stage pressure reduction cavity 7 increases, the pressure of the gas in the second-stage pressure reduction cavity 7 against the second-stage diaphragm 8 is greater than the pressure of the low-pressure spring 9. The diaphragm descends. The lever acts to close the valve port and stop the gas inlet. The automatic opening and closing of the valve port make the outlet port have stable gas pressure. The temperature and pressure sensor assembly 6 is installed above the second-stage pressure reduction cavity 7. The gas in the cavity is communicated with the sensor for detecting the temperature and pressure of the internal gas.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated gas control valve comprising: The utility model relates to a valve body (10), its characterized in that: one end of the valve body (10) is provided with a flow control valve (17), the upper side of the other end of valve body (10) is provided with an on-off valve body (4), and the lower side is fixedly installed with a temperature pressure sensor assembly (6). One end of the flow control valve (17) is fixedly installed with an outlet connector (11), and the upper end of the flow control valve (17) is fixedly installed with two electromagnetic valves (13) in a symmetrical manner. A primary pressure reduction cavity (14) is formed in the upper end of the valve body (10), a secondary pressure reduction cavity (7) is formed in the lower end of the valve body (10), the upper end of the primary pressure reduction cavity (14) is fixedly installed with a cover plate (1) through a primary diaphragm (3), the lower end of the secondary pressure reduction cavity (7) is fixedly installed with the cover plate (1) through a secondary diaphragm (8), and the upper end of the cover plate (1) located at the upper end is fixedly installed with a breather cap (15).

2. An integrated gas control valve according to claim 1, wherein: One end of the valve body (10) is fixedly installed with a fixed plate (16), and a plurality of fixed holes are formed in the upper and lower ends of the fixed plate (16).

3. An integrated gas control valve according to claim 1, wherein: The inner end of one of the cover plates (1) is fixedly installed with a high-pressure spring (2), the other end of the high-pressure spring (2) is fixed to the outer end side wall of the primary diaphragm (3), the inner end of the other cover plate (1) is fixedly installed with a low-pressure spring (9), and the other end of the low-pressure spring (9) is on the outer end side wall of the secondary diaphragm (8).

4. An integrated gas control valve according to claim 3, wherein: The primary pressure reduction cavity (14) and the secondary pressure reduction cavity (7) are both installed with lever portions, and the other ends of the two levers respectively abut against the inner end side walls of the primary diaphragm (3) and the secondary diaphragm (8).

5. The integrated gas control valve of claim 1, wherein: The inner end of the flow control valve (17) is provided with a plurality of air passages, and the outer ends of the air passages are all threadedly connected with plugs (12).

6. An integrated gas control valve according to claim 5, wherein: The outlet connector (11) is communicated with the air passages.

7. An integrated gas control valve as defined in claim 1, wherein: The flow control valve (17) and the valve body (10) are integrally formed.

8. An integrated gas control valve as defined in claim 1, wherein: The on-off valve body (4) is installed with a push rod assembly (5).

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